Affiliate Program Surve

I thought i could see what kind of product every affiliate is selling in my backend!
But this seems only possible to themself at affiliate backend...
So my best wish would be, that I can see in MY backend, what products the affiliates sold - not only how much. For a better survey...
That would be very wonderful!
THX, Webdesigner!
If a survey is not possible - it would help as well, to get a message "affiliate-ID= xx" in invoices
Would be enough...

Did you planned to fix this issue in future? Right now I found that I can add ? to product link (then full path looks like /product/view/6/17.html?&aid=1326&bid=4&Itemid=0), but it's only temporary local solution IMHO.